Ones_Zeros
Member
Hello,
I'm reading a modbus register 40125
I'm using a modbus poll program to read this register. If i read the
register as a "signed" value it displays correctly with value of -2. If
I read the register as a "unsigned" value it displays the value of 65534.
The issue that I'm having is with Wonderware.
Its reading the register 40125 value as 65534 (the unsigned value) and I can't seem to get the scaling correct.
I have tried Raw scaling of 0-65535 and 0-32767 but no luck
any ideas what i could try?
Also this register seems to be the only register that is reading this way for some reason. what causes some registers to read as "signed and some as "unsigned"
thanks,
I'm reading a modbus register 40125
I'm using a modbus poll program to read this register. If i read the
register as a "signed" value it displays correctly with value of -2. If
I read the register as a "unsigned" value it displays the value of 65534.
The issue that I'm having is with Wonderware.
Its reading the register 40125 value as 65534 (the unsigned value) and I can't seem to get the scaling correct.
I have tried Raw scaling of 0-65535 and 0-32767 but no luck
any ideas what i could try?
Also this register seems to be the only register that is reading this way for some reason. what causes some registers to read as "signed and some as "unsigned"
thanks,